package system

import (
  "errors"
  "gorm.io/gorm"
  "livefind/common/request"
  "livefind/global"
  "livefind/model/system"
  "strconv"
)

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getMenuTreeMap
//@description: 获取路由总树map
//@param: authorityId string
//@return: err error, treeMap map[string][]model.SysMenu

type MenuService struct {
}

var MenuServiceApp = new(MenuService)

func (menuService *MenuService) getMenuTreeMap(authorityId string) (err error, treeMap map[string][]system.SysMenu) {
  var allMenus []system.SysMenu
  treeMap = make(map[string][]system.SysMenu)
  err = global.GVA_DB.Where("authority_id = ?", authorityId).Order("sort").Preload("Parameters").Find(&allMenus).Error
  for _, v := range allMenus {
    treeMap[v.ParentId] = append(treeMap[v.ParentId], v)
  }
  return err, treeMap
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetMenuTree
//@description: 获取动态菜单树
//@param: authorityId string
//@return: err error, menus []model.SysMenu

func (menuService *MenuService) GetMenuTree(authorityId string) (err error, menus []system.SysMenu) {
  err, menuTree := menuService.getMenuTreeMap(authorityId)
  menus = menuTree["0"]
  for i := 0; i < len(menus); i++ {
    err = menuService.getChildrenList(&menus[i], menuTree)
  }
  return err, menus
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getChildrenList
//@description: 获取子菜单
//@param: menu *model.SysMenu, treeMap map[string][]model.SysMenu
//@return: err error

func (menuService *MenuService) getChildrenList(menu *system.SysMenu, treeMap map[string][]system.SysMenu) (err error) {
  menu.Children = treeMap[menu.MenuId]
  for i := 0; i < len(menu.Children); i++ {
    err = menuService.getChildrenList(&menu.Children[i], treeMap)
  }
  return err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetInfoList
//@description: 获取路由分页
//@return: err error, list interface{}, total int64

func (menuService *MenuService) GetInfoList() (err error, list interface{}, total int64) {
  var menuList []system.SysBaseMenu
  err, treeMap := menuService.getBaseMenuTreeMap()
  menuList = treeMap["0"]
  for i := 0; i < len(menuList); i++ {
    err = menuService.getBaseChildrenList(&menuList[i], treeMap)
  }
  return err, menuList, total
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getBaseChildrenList
//@description: 获取菜单的子菜单
//@param: menu *model.SysBaseMenu, treeMap map[string][]model.SysBaseMenu
//@return: err error

func (menuService *MenuService) getBaseChildrenList(menu *system.SysBaseMenu, treeMap map[string][]system.SysBaseMenu) (err error) {
  menu.Children = treeMap[strconv.Itoa(int(menu.ID))]
  for i := 0; i < len(menu.Children); i++ {
    err = menuService.getBaseChildrenList(&menu.Children[i], treeMap)
  }
  return err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: AddBaseMenu
//@description: 添加基础路由
//@param: menu model.SysBaseMenu
//@return: error

func (menuService *MenuService) AddBaseMenu(menu system.SysBaseMenu) error {
  if !errors.Is(global.GVA_DB.Where("name = ?", menu.Name).First(&system.SysBaseMenu{}).Error, gorm.ErrRecordNotFound) {
    return errors.New("存在重复name，请修改name")
  }
  return global.GVA_DB.Create(&menu).Error
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getBaseMenuTreeMap
//@description: 获取路由总树map
//@return: err error, treeMap map[string][]model.SysBaseMenu

func (menuService *MenuService) getBaseMenuTreeMap() (err error, treeMap map[string][]system.SysBaseMenu) {
  var allMenus []system.SysBaseMenu
  treeMap = make(map[string][]system.SysBaseMenu)
  err = global.GVA_DB.Order("sort").Preload("Parameters").Find(&allMenus).Error
  for _, v := range allMenus {
    treeMap[v.ParentId] = append(treeMap[v.ParentId], v)
  }
  return err, treeMap
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetBaseMenuTree
//@description: 获取基础路由树
//@return: err error, menus []model.SysBaseMenu

func (menuService *MenuService) GetBaseMenuTree() (err error, menus []system.SysBaseMenu) {
  err, treeMap := menuService.getBaseMenuTreeMap()
  menus = treeMap["0"]
  for i := 0; i < len(menus); i++ {
    err = menuService.getBaseChildrenList(&menus[i], treeMap)
  }
  return err, menus
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: AddMenuAuthority
//@description: 为角色增加menu树
//@param: menus []model.SysBaseMenu, authorityId string
//@return: err error

func (menuService *MenuService) AddMenuAuthority(menus []system.SysBaseMenu, authorityId string) (err error) {
  var auth system.SysAuthority
  auth.AuthorityId = authorityId
  auth.SysBaseMenus = menus
  err = AuthorityServiceApp.SetMenuAuthority(&auth)
  return err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetMenuAuthority
//@description: 查看当前角色树
//@param: info *request.GetAuthorityId
//@return: err error, menus []model.SysMenu

func (menuService *MenuService) GetMenuAuthority(info *request.GetAuthorityId) (err error, menus []system.SysMenu) {
  err = global.GVA_DB.Where("authority_id = ? ", info.AuthorityId).Order("sort").Find(&menus).Error
  //sql := "SELECT authority_menu.keep_alive,authority_menu.default_menu,authority_menu.created_at,authority_menu.updated_at,authority_menu.deleted_at,authority_menu.menu_level,authority_menu.parent_id,authority_menu.path,authority_menu.`name`,authority_menu.hidden,authority_menu.component,authority_menu.title,authority_menu.icon,authority_menu.sort,authority_menu.menu_id,authority_menu.authority_id FROM authority_menu WHERE authority_menu.authority_id = ? ORDER BY authority_menu.sort ASC"
  //err = global.GVA_DB.Raw(sql, authorityId).Scan(&menus).Error
  return err, menus
}
